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土壤有机质是土壤的重要组成部分。土壤的许多属性,都直接或间接地与有机质的存在分不开。因此,提高农田土壤有机质含量,是农业生产和科研的一项重要任务。利用绿肥改良土壤、提高土壤有机质含量和为农作物提供丰富的养分,已为许多试验和大量的生产实践所证实。但是,有的人对绿肥,特别是对一年生豆科绿肥能否积累有机质持相反或怀疑态度,认为一年生豆科绿肥作物,因其C/N值低,矿化作用快,是供给农作物生长所需营养的主要来源,对补充土壤
Soil organic matter is an important part of the soil. Many of the soil’s properties are directly or indirectly inseparable from the presence of organic matter. Therefore, increasing soil organic matter content in farmland is an important task in agricultural production and scientific research. The use of green manure to improve soils, increase soil organic matter content, and provide rich nutrients for crops has been demonstrated by numerous experiments and extensive production practices. However, some people think that the green manure, especially the annual green legumes, can accumulate organic matter in the opposite or skepticism. It is believed that the annual legume green manure crop is supplied with crop growth due to its low C / N value and rapid mineralization The main source of nutrition to supplement the soil